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US 9,793,773 B2Granted
Stator of electric rotary machine and fabrication method therefor
AssigneeHonda Motor Co., Ltd.
InventorTomotaka Iki
Life of this patent
Estimating the term…
Abstract
One embodiment provides a stator of an electric rotary machine, including: a stator core having plural slots; a segmented coil of plural phases; and plural base plates laminated at each end of the stator core in an axial direction. While the stator core and plural coil bars of the segmented coil form a stator core assembly, and the plural base plates and plural end coil connections of the segmented coil form plural base plate assemblies. The stator is configured by the stator core assembly and the plural base plate assemblies laminated at each end of the stator core assembly.
Claims10
A stator of an electric rotary machine, including:
- a stator core having plural slots;
- a segmented coil of plural phases;
- and
- plural base plates laminated at each end of the stator core in an axial direction extending along a rotation axis of the rotary machine,
- wherein the segmented coil includes
- plural coil bars which are individually inserted in the plural slots in the stator core and which extend substantially straight and
- plural end coil connections which are disposed on each of the base plates to form spanning portions to connect the coil bars of the same phase together,
- wherein each of the plural base plates includes plural through holes configured to receive the plural coil bars, respectively,
- wherein each of the plural base plates includes an inner surface located on an inner side thereof in the axial direction and an outer surface located on an outer side thereof in the axial direction, the plural end coil connections are disposed on the inner surface and on the outer surface,
- wherein the stator core and the plural coil bars form a stator core assembly,
- wherein each of the plural base plates is assembled with a corresponding part of the plural end coil connections to form a corresponding one of plural base plate assemblies,
- wherein the stator is configured by the stator core assembly and the plural base plate assemblies laminated at each end of the stator core assembly, and
- wherein the plural base plates include a first base plate and a second base plate both of which are disposed at one end of the stator core in the axial direction, the second base plate being disposed outward of the first base plate in the axial direction of the stator core.
10 more elements
A fabrication method for a stator of an electric rotary machine including:
- a stator core having plural slots;
- a segmented coil of plural phases;
- and plural base plates laminated at each end of the stator core in an axial direction, wherein the segmented coil includes plural coil bars which are individually inserted in the plural slots in the stator core and which extend substantially straight and plural end coil connections which are disposed on each of the base plates to form spanning portions to connect the coil bars of the same phase together, the method including:
- inserting the plural coil bars in the individual slots in the stator core to form a stator assembly;
- disposing the plural end coil connections individually in the base plates to form plural base plate assemblies such that each of the plural base plates is assembled with a corresponding part of the plural end coil connections to form a corresponding one of the plural base plate assemblies;
- and
- laminating the plural base plate assemblies to each end of the stator core assembly in an axial direction extending along a rotation axis of the rotary machine side of the stator core assembly while interposing an insulating member therebetween to assemble them such that the plural base plates include a first base plate and a second base plate both of which are disposed at one end of the stator core assembly in the axial direction, the second base plate being disposed outward of the first base plate in the axial direction of the stator core assembly such that each of the plural base plates includes plural through holes configured to receive the plural coil bars, respectively, and each of the plural base plates includes an inner surface located on an inner side thereof in the axial direction and an outer surface located on an outer side thereof in the axial direction, the plural end coil connections are disposed on the inner surface and on the outer surface.
4 more elements
Dependencies are inferred from the claim text.